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Finding the Third Proportional to 4,877 and 7,417

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Solution

The third proportional to 4,877 and 7,417 is: 11,279.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,877 : 7,417 = 7,417 : x
  2. Step 2: Convert to fraction form
    4,877/7,417 = 7,417/x
  3. Step 3: Cross multiply
    4,877x = 7,417 × 7,417
  4. Step 4: Simplify right side
    4,877x = 55,011,889
  5. Step 5: Solve for x
    x = 55,011,889/4,877
  6. Step 6: Final answer
    x = 11,279.86

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.